If I've got Elrond and Herd Baloth on the field and cast the Cryptic Annelid I showed you earlier, I'll pay four mana, scry 1, scry 2, scry 3 and end up with an additional 17 power on board in the form of three 4/4 beast tokens, a 1 power Cryptic Annelid and six +1/+1 counters
Throw this on some of the new, nasty creatures that punish them for blocking like Phyrexian Vindicator or, its scarier and much more blockable friend, "Phyrexian Vindicator with a Colossus Hammer"
This set is actually pretty good in terms of playability, especially Coalossal VMAX and Donphan/Phanpy
The result is you cast one artifact, and you get two
While Baxcalibur is best used on the Bench, if you happen to draw Frigibax first, the Promo is better as it can use stiffen to shrug off 20 damage
As far as Planeswalkers go, Ajani is a great place to start for any player, giving their creatures more power, and the option to overwhelm an opponent in an instant